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v3.10.0.1

Cash and Cash Equivalents - Additional Information (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Bottom of range [member] |  |
Disclosure of cash and cash equivalents [line items] |  |
Time deposits interest rate | 1.49% | 0.42%
Top of range [member] |  |
Disclosure of cash and cash equivalents [line items] |  |
Time deposits interest rate | 1.58% | 1.00%

X
- Definition Adjustment for interest rate earning time deposit. + References No definition available. + Details
Name: | cpa_AdjustmentForInterestRateEarningTimeDeposit
Namespace Prefix: | cpa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of cash and cash equivalents. + References No definition available. + Details
Name: | cpa_DisclosureOfCashAndCashEquivalentsLineItems
Namespace Prefix: | cpa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |